Hi,

the current builds are failing in EmbeddedServletContainerJarPackagingIntegrationTests. Unfortunately, I can't take care of it myself at the moment. Apparently, there has been a force-push to master that screwed things badly for me.

Here's a local stacktrace though.

Exception in thread "main" java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:112)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:93)
Caused by: java.lang.LinkageError: loader org.springframework.boot.loader.ExplodedURLClassLoader @3a71f4dd attempted duplicate class definition for org.springframework.boot.builder.SpringApplicationBuilder. (org.springframework.boot.builder.SpringApplicationBuilder is in unnamed module of loader org.springframework.boot.loader.ExplodedURLClassLoader @3a71f4dd, parent loader 'app')
    at java.base/java.lang.ClassLoader.defineClass1(Native Method)
    at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016)
    at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151)
    at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:515)
    at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:423)
    at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:417)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
    at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:416)
    at org.springframework.boot.loader.ExplodedURLClassLoader.loadClass(ExplodedURLClassLoader.java:36)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
    at ch.qos.logback.classic.spi.PackagingDataCalculator.loadClass(PackagingDataCalculator.java:204)
    at ch.qos.logback.classic.spi.PackagingDataCalculator.bestEffortLoadClass(PackagingDataCalculator.java:228)
    at ch.qos.logback.classic.spi.PackagingDataCalculator.computeBySTEP(PackagingDataCalculator.java:135)
    at ch.qos.logback.classic.spi.PackagingDataCalculator.populateFrames(PackagingDataCalculator.java:100)
    at ch.qos.logback.classic.spi.PackagingDataCalculator.calculate(PackagingDataCalculator.java:58)
    at ch.qos.logback.classic.spi.ThrowableProxy.calculatePackagingData(ThrowableProxy.java:142)
    at ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:122)
    at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:419)
    at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:383)
    at ch.qos.logback.classic.Logger.log(Logger.java:765)
    at org.apache.commons.logging.LogAdapter$Slf4jLocationAwareLog.error(LogAdapter.java:428)
    at org.springframework.boot.SpringApplication.reportFailure(SpringApplication.java:826)
    at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:801)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:325)
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140)
    at com.example.ResourceHandlingApplication.main(ResourceHandlingApplication.java:60)
    ... 8 more
%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]%PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[clr] %PARSER_ERROR[m]%PARSER_ERROR[n]%PARSER_ERROR[wEx]
Application failed to start
java.lang.IllegalStateException: Application failed to start
    at org.springframework.boot.context.embedded.AbstractApplicationLauncher.lambda$awaitServerPort$0(AbstractApplicationLauncher.java:100)
    at org.awaitility.core.ConditionFactory$1.matchesSafely(ConditionFactory.java:609)
    at org.hamcrest.TypeSafeMatcher.matches(TypeSafeMatcher.java:67)
    at org.awaitility.core.AbstractHamcrestCondition.lambda$new$0(AbstractHamcrestCondition.java:49)
    at org.awaitility.core.ConditionAwaiter$ConditionPoller.call(ConditionAwaiter.java:203)
    at org.awaitility.core.ConditionAwaiter$ConditionPoller.call(ConditionAwaiter.java:190)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:830)
    Suppressed: java.lang.NullPointerException
        at org.springframework.boot.context.embedded.AbstractApplicationLauncher.afterEach(AbstractApplicationLauncher.java:60)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAfterEachCallbacks$11(TestMethodTestDescriptor.java:245)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$12(TestMethodTestDescriptor.java:256)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeAllAfterMethodsOrCallbacks$13(TestMethodTestDescriptor.java:256)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAllAfterMethodsOrCallbacks(TestMethodTestDescriptor.java:255)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeAfterEachCallbacks(TestMethodTestDescriptor.java:244)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:141)
        at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
        at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
        at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask$DefaultDynamicTestExecutor.execute(NodeTestTask.java:198)
        at org.junit.jupiter.engine.descriptor.TestTemplateTestDescriptor.execute(TestTemplateTestDescriptor.java:138)
        at org.junit.jupiter.engine.descriptor.TestTemplateTestDescriptor.lambda$execute$2(TestTemplateTestDescriptor.java:106)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
        at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
        at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
        at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:274)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
        at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1605)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
        at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:274)
        at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1621)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
        at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
        at org.junit.jupiter.engine.descriptor.TestTemplateTestDescriptor.execute(TestTemplateTestDescriptor.java:106)
        at org.junit.jupiter.engine.descriptor.TestTemplateTestDescriptor.execute(TestTemplateTestDescriptor.java:41)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
        at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
        at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
        at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
        at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
        at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
        at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
        at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
        at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
        at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
        at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
        at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
        at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)
        at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
        at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
        at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
        at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99)
        at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79)
        at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75)
        at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
        at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
        at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
        at com.sun.proxy.$Proxy2.stop(Unknown Source)
        at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:132)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
        at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
        at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
        at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
        at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:412)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
        ... 1 more

Cheers, Christoph

Comment From: dreis2211

I guess @philwebb just reported this a minute earlier via #19858 . I leave this open in case he meant something different.

Comment From: philwebb

Thanks @dreis2211, that issue is for something different but I got to this one in 951d0b0fdf02e3ce4373a38ef596a765dd5d0848